The Effect of N, P, K and Si Fertilizers on Some Soil Chemical Properties, N, P uptake and Growth of Black Rice (Oryza sativa L. indica) in Ultisols. ijlsar [Internet]. 2024 Feb. 5 [cited 2025 Apr. 3];3(2):64-70. Available from: https://ijlsar.org/index.php/ijlsar/article/view/195